Практическое руководство. Закрепление дочерних элементов управления в элементе управления FlowLayoutPanel
Элемент управления FlowLayoutPanel поддерживает свойства Anchor и Dock в своих дочерних элементах управления.
Привязка и закрепление дочерних элементов управления в элементе управления FlowLayoutPanel
Создание элемента управления FlowLayoutPanel в форме.
Присвойте параметру Width элемента управления FlowLayoutPanel значение 300, а параметру FlowDirection значение TopDown.
Создайте два элемента управления Button и поместите их в элемент управления FlowLayoutPanel.
Присвойте свойству Width первой кнопки значение 200.
Присвойте свойству Dock первой кнопки значение Fill.
Примечание.
Вторая кнопка принимает ту же ширину, что и первая кнопка. Она не растягивается по ширине элемента управления FlowLayoutPanel.
Присвойте свойству Dock первой кнопки значение
None. При этом кнопка примет исходную ширину.Присвойте свойству Anchor первой кнопки значение
Left, Right.Важно!
Вторая кнопка принимает ту же ширину, что и первая кнопка. Она не растягивается по ширине элемента управления FlowLayoutPanel. Общее правило для привязки и закрепления в элементе управления FlowLayoutPanel: в вертикальном направлении элемент управления FlowLayoutPanel вычисляет ширину предполагаемого столбца исходя из ширины самого широкого элемента управления в столбце. Другие элементы управления в этом столбце со свойствами Anchor или Dock выравниваются или растягиваются до этого предполагаемого столбца. Аналогичное поведение работает и в горизонтальном направлении. Элемент управления FlowLayoutPanel вычисляет высоту предполагаемой строки на основе самого высокого дочернего элемента управления в строке, и все закрепленные или привязанные дочерние элементы управления в этой строке выравниваются или их размеры устанавливаются в соответствии с предполагаемой строкой.
Пример
На следующем рисунке показаны четыре кнопки, привязанный и закрепленные по отношению к синей кнопке в FlowLayoutPanel. Значение параметра FlowDirection — LeftToRight.
На следующем рисунке показаны четыре кнопки, привязанный и закрепленные по отношению к синей кнопке в FlowLayoutPanel. Значение параметра FlowDirection — TopDown.
В следующем примере кода демонстрируются все варианты свойства Anchor для размещения элемента управления Button в элементе управления FlowLayoutPanel.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
public class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private FlowLayoutPanel flowLayoutPanel3;
private Label label2;
private Button button11;
private Button button12;
private Button button13;
private Button button14;
private Button button15;
private FlowLayoutPanel flowLayoutPanel1;
private Label label1;
private Button button1;
private Button button2;
private Button button3;
private Button button4;
private Button button5;
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
private void InitializeComponent()
{
this.flowLayoutPanel3 = new System.Windows.Forms.FlowLayoutPanel();
this.label2 = new System.Windows.Forms.Label();
this.button11 = new System.Windows.Forms.Button();
this.button12 = new System.Windows.Forms.Button();
this.button13 = new System.Windows.Forms.Button();
this.button14 = new System.Windows.Forms.Button();
this.button15 = new System.Windows.Forms.Button();
this.flowLayoutPanel1 = new System.Windows.Forms.FlowLayoutPanel();
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.button5 = new System.Windows.Forms.Button();
this.flowLayoutPanel3.SuspendLayout();
this.flowLayoutPanel1.SuspendLayout();
this.SuspendLayout();
//
// flowLayoutPanel3
//
this.flowLayoutPanel3.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.flowLayoutPanel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.flowLayoutPanel3.Controls.Add(this.label2);
this.flowLayoutPanel3.Controls.Add(this.button11);
this.flowLayoutPanel3.Controls.Add(this.button12);
this.flowLayoutPanel3.Controls.Add(this.button13);
this.flowLayoutPanel3.Controls.Add(this.button14);
this.flowLayoutPanel3.Controls.Add(this.button15);
this.flowLayoutPanel3.Location = new System.Drawing.Point(12, 12);
this.flowLayoutPanel3.Name = "flowLayoutPanel3";
this.flowLayoutPanel3.Size = new System.Drawing.Size(631, 100);
this.flowLayoutPanel3.TabIndex = 2;
//
// label2
//
this.label2.Anchor = System.Windows.Forms.AnchorStyles.None;
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(3, 28);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(138, 14);
this.label2.TabIndex = 10;
this.label2.Text = "FlowDirection=LeftToRight";
//
// button11
//
this.button11.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.button11.AutoSize = true;
this.button11.Location = new System.Drawing.Point(147, 44);
this.button11.Name = "button11";
this.button11.Size = new System.Drawing.Size(86, 23);
this.button11.TabIndex = 5;
this.button11.Text = "Anchor=Bottom";
//
// button12
//
this.button12.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)));
this.button12.AutoSize = true;
this.button12.Location = new System.Drawing.Point(239, 3);
this.button12.Name = "button12";
this.button12.Size = new System.Drawing.Size(111, 64);
this.button12.TabIndex = 6;
this.button12.Text = "Anchor=Top, Bottom";
//
// button13
//
this.button13.Anchor = System.Windows.Forms.AnchorStyles.None;
this.button13.BackColor = System.Drawing.SystemColors.GradientActiveCaption;
this.button13.Location = new System.Drawing.Point(356, 3);
this.button13.Name = "button13";
this.button13.Size = new System.Drawing.Size(75, 64);
this.button13.TabIndex = 7;
//
// button14
//
this.button14.Dock = System.Windows.Forms.DockStyle.Bottom;
this.button14.Location = new System.Drawing.Point(437, 44);
this.button14.Name = "button14";
this.button14.TabIndex = 8;
this.button14.Text = "Dock=Bottom";
//
// button15
//
this.button15.Dock = System.Windows.Forms.DockStyle.Fill;
this.button15.Location = new System.Drawing.Point(518, 3);
this.button15.Name = "button15";
this.button15.Size = new System.Drawing.Size(75, 64);
this.button15.TabIndex = 9;
this.button15.Text = "Dock=Fill";
//
// flowLayoutPanel1
//
this.flowLayoutPanel1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.flowLayoutPanel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.flowLayoutPanel1.Controls.Add(this.label1);
this.flowLayoutPanel1.Controls.Add(this.button1);
this.flowLayoutPanel1.Controls.Add(this.button2);
this.flowLayoutPanel1.Controls.Add(this.button3);
this.flowLayoutPanel1.Controls.Add(this.button4);
this.flowLayoutPanel1.Controls.Add(this.button5);
this.flowLayoutPanel1.FlowDirection = System.Windows.Forms.FlowDirection.TopDown;
this.flowLayoutPanel1.Location = new System.Drawing.Point(12, 118);
this.flowLayoutPanel1.Name = "flowLayoutPanel1";
this.flowLayoutPanel1.Size = new System.Drawing.Size(200, 209);
this.flowLayoutPanel1.TabIndex = 3;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(3, 3);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(128, 14);
this.label1.TabIndex = 11;
this.label1.Text = "FlowDirection=TopDown";
//
// button1
//
this.button1.Anchor = System.Windows.Forms.AnchorStyles.Right;
this.button1.Location = new System.Drawing.Point(74, 23);
this.button1.Name = "button1";
this.button1.TabIndex = 5;
this.button1.Text = "Anchor=Right";
//
// button2
//
this.button2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));
this.button2.Location = new System.Drawing.Point(3, 52);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(146, 23);
this.button2.TabIndex = 6;
this.button2.Text = "Anchor=Left, Right";
//
// button3
//
this.button3.BackColor = System.Drawing.SystemColors.GradientActiveCaption;
this.button3.Location = new System.Drawing.Point(3, 81);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(146, 23);
this.button3.TabIndex = 7;
//
// button4
//
this.button4.Dock = System.Windows.Forms.DockStyle.Right;
this.button4.Location = new System.Drawing.Point(74, 110);
this.button4.Name = "button4";
this.button4.TabIndex = 8;
this.button4.Text = "Dock=Right";
//
// button5
//
this.button5.Dock = System.Windows.Forms.DockStyle.Fill;
this.button5.Location = new System.Drawing.Point(3, 139);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(146, 23);
this.button5.TabIndex = 9;
this.button5.Text = "Dock=Fill";
//
// Form1
//
this.ClientSize = new System.Drawing.Size(658, 341);
this.Controls.Add(this.flowLayoutPanel1);
this.Controls.Add(this.flowLayoutPanel3);
this.Name = "Form1";
this.Text = "Form1";
this.flowLayoutPanel3.ResumeLayout(false);
this.flowLayoutPanel3.PerformLayout();
this.flowLayoutPanel1.ResumeLayout(false);
this.flowLayoutPanel1.PerformLayout();
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing
Imports System.Windows.Forms
Public Class Form1
Inherits Form
Public Sub New()
InitializeComponent()
End Sub
Private flowLayoutPanel3 As FlowLayoutPanel
Private label2 As Label
Private button11 As Button
Private button12 As Button
Private button13 As Button
Private button14 As Button
Private button15 As Button
Private flowLayoutPanel1 As FlowLayoutPanel
Private label1 As Label
Private button1 As Button
Private button2 As Button
Private button3 As Button
Private button4 As Button
Private button5 As Button
Private components As System.ComponentModel.IContainer = Nothing
Protected Overrides Sub Dispose(disposing As Boolean)
If disposing AndAlso (components IsNot Nothing) Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
Private Sub InitializeComponent()
Me.flowLayoutPanel3 = New System.Windows.Forms.FlowLayoutPanel()
Me.label2 = New System.Windows.Forms.Label()
Me.button11 = New System.Windows.Forms.Button()
Me.button12 = New System.Windows.Forms.Button()
Me.button13 = New System.Windows.Forms.Button()
Me.button14 = New System.Windows.Forms.Button()
Me.button15 = New System.Windows.Forms.Button()
Me.flowLayoutPanel1 = New System.Windows.Forms.FlowLayoutPanel()
Me.label1 = New System.Windows.Forms.Label()
Me.button1 = New System.Windows.Forms.Button()
Me.button2 = New System.Windows.Forms.Button()
Me.button3 = New System.Windows.Forms.Button()
Me.button4 = New System.Windows.Forms.Button()
Me.button5 = New System.Windows.Forms.Button()
Me.flowLayoutPanel3.SuspendLayout()
Me.flowLayoutPanel1.SuspendLayout()
Me.SuspendLayout()
'
' flowLayoutPanel3
'
Me.flowLayoutPanel3.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
Me.flowLayoutPanel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
Me.flowLayoutPanel3.Controls.Add(Me.label2)
Me.flowLayoutPanel3.Controls.Add(Me.button11)
Me.flowLayoutPanel3.Controls.Add(Me.button12)
Me.flowLayoutPanel3.Controls.Add(Me.button13)
Me.flowLayoutPanel3.Controls.Add(Me.button14)
Me.flowLayoutPanel3.Controls.Add(Me.button15)
Me.flowLayoutPanel3.Location = New System.Drawing.Point(12, 12)
Me.flowLayoutPanel3.Name = "flowLayoutPanel3"
Me.flowLayoutPanel3.Size = New System.Drawing.Size(631, 100)
Me.flowLayoutPanel3.TabIndex = 2
'
' label2
'
Me.label2.Anchor = System.Windows.Forms.AnchorStyles.None
Me.label2.AutoSize = True
Me.label2.Location = New System.Drawing.Point(3, 28)
Me.label2.Name = "label2"
Me.label2.Size = New System.Drawing.Size(138, 14)
Me.label2.TabIndex = 10
Me.label2.Text = "FlowDirection=LeftToRight"
'
' button11
'
Me.button11.Anchor = System.Windows.Forms.AnchorStyles.Bottom
Me.button11.AutoSize = True
Me.button11.Location = New System.Drawing.Point(147, 44)
Me.button11.Name = "button11"
Me.button11.Size = New System.Drawing.Size(86, 23)
Me.button11.TabIndex = 5
Me.button11.Text = "Anchor=Bottom"
'
' button12
'
Me.button12.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom, System.Windows.Forms.AnchorStyles)
Me.button12.AutoSize = True
Me.button12.Location = New System.Drawing.Point(239, 3)
Me.button12.Name = "button12"
Me.button12.Size = New System.Drawing.Size(111, 64)
Me.button12.TabIndex = 6
Me.button12.Text = "Anchor=Top, Bottom"
'
' button13
'
Me.button13.Anchor = System.Windows.Forms.AnchorStyles.None
Me.button13.BackColor = System.Drawing.SystemColors.GradientActiveCaption
Me.button13.Location = New System.Drawing.Point(356, 3)
Me.button13.Name = "button13"
Me.button13.Size = New System.Drawing.Size(75, 64)
Me.button13.TabIndex = 7
'
' button14
'
Me.button14.Dock = System.Windows.Forms.DockStyle.Bottom
Me.button14.Location = New System.Drawing.Point(437, 44)
Me.button14.Name = "button14"
Me.button14.TabIndex = 8
Me.button14.Text = "Dock=Bottom"
'
' button15
'
Me.button15.Dock = System.Windows.Forms.DockStyle.Fill
Me.button15.Location = New System.Drawing.Point(518, 3)
Me.button15.Name = "button15"
Me.button15.Size = New System.Drawing.Size(75, 64)
Me.button15.TabIndex = 9
Me.button15.Text = "Dock=Fill"
'
' flowLayoutPanel1
'
Me.flowLayoutPanel1.Anchor = CType(System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
Me.flowLayoutPanel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
Me.flowLayoutPanel1.Controls.Add(Me.label1)
Me.flowLayoutPanel1.Controls.Add(Me.button1)
Me.flowLayoutPanel1.Controls.Add(Me.button2)
Me.flowLayoutPanel1.Controls.Add(Me.button3)
Me.flowLayoutPanel1.Controls.Add(Me.button4)
Me.flowLayoutPanel1.Controls.Add(Me.button5)
Me.flowLayoutPanel1.FlowDirection = System.Windows.Forms.FlowDirection.TopDown
Me.flowLayoutPanel1.Location = New System.Drawing.Point(12, 118)
Me.flowLayoutPanel1.Name = "flowLayoutPanel1"
Me.flowLayoutPanel1.Size = New System.Drawing.Size(200, 209)
Me.flowLayoutPanel1.TabIndex = 3
'
' label1
'
Me.label1.AutoSize = True
Me.label1.Location = New System.Drawing.Point(3, 3)
Me.label1.Name = "label1"
Me.label1.Size = New System.Drawing.Size(128, 14)
Me.label1.TabIndex = 11
Me.label1.Text = "FlowDirection=TopDown"
'
' button1
'
Me.button1.Anchor = System.Windows.Forms.AnchorStyles.Right
Me.button1.Location = New System.Drawing.Point(74, 23)
Me.button1.Name = "button1"
Me.button1.TabIndex = 5
Me.button1.Text = "Anchor=Right"
'
' button2
'
Me.button2.Anchor = CType(System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
Me.button2.Location = New System.Drawing.Point(3, 52)
Me.button2.Name = "button2"
Me.button2.Size = New System.Drawing.Size(146, 23)
Me.button2.TabIndex = 6
Me.button2.Text = "Anchor=Left, Right"
'
' button3
'
Me.button3.BackColor = System.Drawing.SystemColors.GradientActiveCaption
Me.button3.Location = New System.Drawing.Point(3, 81)
Me.button3.Name = "button3"
Me.button3.Size = New System.Drawing.Size(146, 23)
Me.button3.TabIndex = 7
'
' button4
'
Me.button4.Dock = System.Windows.Forms.DockStyle.Right
Me.button4.Location = New System.Drawing.Point(74, 110)
Me.button4.Name = "button4"
Me.button4.TabIndex = 8
Me.button4.Text = "Dock=Right"
'
' button5
'
Me.button5.Dock = System.Windows.Forms.DockStyle.Fill
Me.button5.Location = New System.Drawing.Point(3, 139)
Me.button5.Name = "button5"
Me.button5.Size = New System.Drawing.Size(146, 23)
Me.button5.TabIndex = 9
Me.button5.Text = "Dock=Fill"
'
' Form1
'
Me.ClientSize = New System.Drawing.Size(658, 341)
Me.Controls.Add(flowLayoutPanel1)
Me.Controls.Add(flowLayoutPanel3)
Me.Name = "Form1"
Me.Text = "Form1"
Me.flowLayoutPanel3.ResumeLayout(False)
Me.flowLayoutPanel3.PerformLayout()
Me.flowLayoutPanel1.ResumeLayout(False)
Me.flowLayoutPanel1.PerformLayout()
Me.ResumeLayout(False)
End Sub
<STAThread()> _
Shared Sub Main()
Application.EnableVisualStyles()
Application.Run(New Form1())
End Sub
End Class
Компиляция кода
Для этого примера требуются:
- ссылки на сборки System, System.Data, System.Drawing и System.Windows.Forms.
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